<template>
  <div class="swiper-container" ref='cur'>
    <div class="swiper-wrapper">
      <div class="swiper-slide" v-for="(imgattr,index) in skuImageList" :key="imgattr.id" >
        <img :src="imgattr.imgUrl" @click="clickCurindex(index)" :class="{active:curIndex == index}">
      </div>
    </div>
    <div class="swiper-button-next"></div>
    <div class="swiper-button-prev"></div>
  </div>
</template>

<script>
  import Swiper from 'swiper'
  export default {
    name: "ImageList",
    props:{
      skuImageList: {
        type: Array,
        default: () => []
      }
    },
    watch:{
      skuImageList: {
        handler(n,o){
          this.$nextTick(()=>{
            new Swiper(this.$refs.cur, {
              // 如果需要前进后退按钮
              navigation: {
                nextEl: ".swiper-button-next",
                prevEl: ".swiper-button-prev",
              },
              slidesPerView : 3, // 展示几个图
              slidesPerGroup : 3, // 翻几个图
            });
          })
        },
        immediate: true,//立即监听一次，list数据发生过变化
      }
    },
    data(){
      return{
        curIndex:0
      }
    },
    methods:{
      clickCurindex(index){
        this.curIndex = index;
        this.$bus.$emit('getIndex',index)
      }
    }
  }
</script>

<style lang="scss" scoped>
  .swiper-container {
    height: 56px;
    width: 412px;
    box-sizing: border-box;
    padding: 0 12px;

    .swiper-slide {
      width: 56px;
      height: 56px;
      
      img {
        width: 100%;
        height: 100%;
        border: 1px solid #ccc;
        padding: 2px;
        width: 50px;
        height: 50px;
        display: block;

        &.active {
          border: 2px solid #f60;
          padding: 1px;
        }

        // &:hover {
        //   border: 2px solid #f60;
        //   padding: 1px;
        // }
      }
    }

    .swiper-button-next {
      left: auto;
      right: 0;
    }

    .swiper-button-prev {
      left: 0;
      right: auto;
    }

    .swiper-button-next,
    .swiper-button-prev {
      box-sizing: border-box;
      width: 12px;
      height: 56px;
      background: rgb(235, 235, 235);
      border: 1px solid rgb(204, 204, 204);
      top: 0;
      margin-top: 0;
      &::after {
        font-size: 12px;
      }
    }
  }
</style>